feat: add rust solution to lc problem: No.0092 (#1673)

No.0092.Reverse Linked List II

Author: poltao

solution/0000-0099/0092.Reverse Linked List II/README.md

@@ -317,6 +317,48 @@ function reverseBetween(head: ListNode | null, left: number, right: number): Lis
 }
 ```
 
+### **Rust**
+
+```rust
+// Definition for singly-linked list.
+// #[derive(PartialEq, Eq, Clone, Debug)]
+// pub struct ListNode {
+//   pub val: i32,
+//   pub next: Option<Box<ListNode>>
+// }
+//
+// impl ListNode {
+//   #[inline]
+//   fn new(val: i32) -> Self {
+//     ListNode {
+//       next: None,
+//       val
+//     }
+//   }
+// }
+impl Solution {
+    pub fn reverse_between(head: Option<Box<ListNode>>, left: i32, right: i32) -> Option<Box<ListNode>> {
+        let mut dummy = Some(Box::new(ListNode { val: 0, next: head }));
+        let mut pre = &mut dummy;
+        for _ in 1..left {
+            pre = &mut pre.as_mut().unwrap().next;
+        }
+        let mut cur = pre.as_mut().unwrap().next.take();
+        for _ in 0..right - left + 1 {
+            let mut next = cur.as_mut().unwrap().next.take();
+            cur.as_mut().unwrap().next = pre.as_mut().unwrap().next.take();
+            pre.as_mut().unwrap().next = cur.take();
+            cur = next;
+        }
+        for _ in 0..right - left + 1 {
+            pre = &mut pre.as_mut().unwrap().next;
+        }
+        pre.as_mut().unwrap().next = cur;
+        dummy.unwrap().next
+    }
+}
+```
+
 ### **...**
 
 ```

solution/0000-0099/0092.Reverse Linked List II/README_EN.md

@@ -300,6 +300,48 @@ function reverseBetween(head: ListNode | null, left: number, right: number): Lis
 }
 ```
 
+### **Rust**
+
+```rust
+// Definition for singly-linked list.
+// #[derive(PartialEq, Eq, Clone, Debug)]
+// pub struct ListNode {
+//   pub val: i32,
+//   pub next: Option<Box<ListNode>>
+// }
+//
+// impl ListNode {
+//   #[inline]
+//   fn new(val: i32) -> Self {
+//     ListNode {
+//       next: None,
+//       val
+//     }
+//   }
+// }
+impl Solution {
+    pub fn reverse_between(head: Option<Box<ListNode>>, left: i32, right: i32) -> Option<Box<ListNode>> {
+        let mut dummy = Some(Box::new(ListNode { val: 0, next: head }));
+        let mut pre = &mut dummy;
+        for _ in 1..left {
+            pre = &mut pre.as_mut().unwrap().next;
+        }
+        let mut cur = pre.as_mut().unwrap().next.take();
+        for _ in 0..right - left + 1 {
+            let mut next = cur.as_mut().unwrap().next.take();
+            cur.as_mut().unwrap().next = pre.as_mut().unwrap().next.take();
+            pre.as_mut().unwrap().next = cur.take();
+            cur = next;
+        }
+        for _ in 0..right - left + 1 {
+            pre = &mut pre.as_mut().unwrap().next;
+        }
+        pre.as_mut().unwrap().next = cur;
+        dummy.unwrap().next
+    }
+}
+```
+
 ### **...**
 
 ```

solution/0000-0099/0092.Reverse Linked List II/Solution.rs

@@ -0,0 +1,37 @@
+// Definition for singly-linked list.
+// #[derive(PartialEq, Eq, Clone, Debug)]
+// pub struct ListNode {
+//   pub val: i32,
+//   pub next: Option<Box<ListNode>>
+// }
+//
+// impl ListNode {
+//   #[inline]
+//   fn new(val: i32) -> Self {
+//     ListNode {
+//       next: None,
+//       val
+//     }
+//   }
+// }
+impl Solution {
+    pub fn reverse_between(head: Option<Box<ListNode>>, left: i32, right: i32) -> Option<Box<ListNode>> {
+        let mut dummy = Some(Box::new(ListNode { val: 0, next: head }));
+        let mut pre = &mut dummy;
+        for _ in 1..left {
+            pre = &mut pre.as_mut().unwrap().next;
+        }
+        let mut cur = pre.as_mut().unwrap().next.take();
+        for _ in 0..right - left + 1 {
+            let mut next = cur.as_mut().unwrap().next.take();
+            cur.as_mut().unwrap().next = pre.as_mut().unwrap().next.take();
+            pre.as_mut().unwrap().next = cur.take();
+            cur = next;
+        }
+        for _ in 0..right - left + 1 {
+            pre = &mut pre.as_mut().unwrap().next;
+        }
+        pre.as_mut().unwrap().next = cur;
+        dummy.unwrap().next
+    }
+}